Tool/software:
Hi,
For an application I want to use this chip as an over voltage and short circuit protection device, which is permanent powered by 24 Vdc. . For this application it is important that the connected N-FET (controlled by the TPS4800 chip) always remains on during normal operation. Meaning the FET should be ON (conducting) for hours without interruptions (assuming no over voltage occurs).
Normally when using a bootstrap capacitor (in lets say a half bridge converter) this capacitor is charged when the FET is not conducting. Once charged the capacitor then is used to drive the FET, and thus discharges slowly.
The TPS4800 chip requires a N-FET to work, and this N-FET requires a voltage larger than the chip input voltage, hence the bootstrap capacitor.
My question is; can this chip continue drive the N-FET without interruptions? In my application the input supply voltage is 24 Vdc, and I want to have the same (permanent) 24 Vdc on the output without glitches or interuptions. Is the TPS4800 suitable for this?
